Baker s oven



(No Model.)

A. T. SI'MPKINS.

2 SheetsSheet 1.

' BAKERS OVEN. No.'419,369.

Patented Jan;

-41Am7. SW 414% u. versus. Pnmumu n mr, Walhington, n. c

2 Sheets Sheet 2.-

(No Model.)

A. T. SIMPKINS;

BAKERS' OVEN.

No. 419,369. Patented-Jan. 14, 1890.

QlEVV-JJVJ'OR QM @a/Qifi ITJVE/S/A/Z/F/ ym N. FCTEH$ PhnkrI-Zhngrapher. walmn mv a c UNITED STATES PATENT OFFICE.

ALVIN T. SIMPKINS, OF ST. LOUIS, MISSOURI.

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 419,369, dated January 14, 1890.

Application filed January 18, 1889. Serial No. 296,738. (No model.)

To all whom it may concern Be it known that I, ALVIN T. SIMPKINs, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have i11- vented a certain new and usefulImprovement in Bakers Ovens, of which the following is a full, clear, and exact description.

My invention relates to improvements in knockdown or portable bakers ovens, and has for its objectto reduce the cost of their construction and obtain a portable structure that can be easily taken apart.

It consists in a detachable sectional casing or frame-Work of iron surrounding the ovenchamber, furnace, and flues, the intermediate spaces being filled with sand, brick, rubbish, or other suitable material.

On the accompanying drawings, Figure 1 represents a side sectional elevation of my improved bakers oven, partly broken; Fig. 2, a sectional plan thereof on line 1 1 in Fig. '1; Fig. 3, a transverse section on line 2 2 in Fig. 1, and Fig. 4 a sectional plan on line 3 3 in Fig. 1.

Like letters of reference denote like parts in all the figures.

In carrying out my invention I construct the outer walls a and floor b of the oven structure with sheet-iron flanged (or angled) externally at the corners and secured together thereat by bolts 0, (screws or otherwise.)

The walls (Z and crown d of the furnacechamber 6 may be built of fire-brick or tile, the walls d being located within an opening therefor through the bottom I), beneath which they are supported by and between the sides of a sheet-iron pocket f, projecting downward from the floor b.

From the rear end of the furnace-chamber c detachable flues g of fire-brick or tile extend beneath the oven-chamber it toward the rear wall a and return in opposite directions toward the side and front walls a to within a suitable distance of the latter, where each flue 9 opens into detachable upright flue 2', communicating above with a sheet-iron flue j, which is located immediately over and extends along the roof is of the oven-chamber 71 toward the rear wall a, whence it returns toward the front walla, the two flues j communicating thereat with a detachable common uptake and chimney Z. The roof 7c of the oven-chamber h is of sheet-iron stiffened by the fiues j, which are secured thereto by flanges or angles. The sides mand rear end at of the oven-chamber h are of sheet-iron secured together and to the roof is and outer walls a by flanging or angles bolted together or otherwise, as found most practical and economical. The spaces thus formed between the furnace c, fiues g c j, and oven-chamber h are filled with sand, brick, rubbish, or

other suitable material .2, which at the floorlevel of the oven-chamber h are paved with bricks or cement, the whole being supported on standards 0 and forming a cheap and substantial structure, which can be readily taken apart and re-erected without the expense and labor required where brick-work is used, as in the present system of bakers ovens.

By this invention the heat absorbed by the filling 2 between the furnace, fines, and oven-chamber will be gradually and uniformly imparted to the latter, so that the loaves will be properly and evenly baked without the necessity of shifting them, as in the present ovens.

I claim as my invention- 1. In a knockdown portable oven, the combination, with a casing composed of sheetmetal sections detachably connected together, of a furnace having detachable reflex fines leading therefrom in the plane of the furnace, a detachable superposed oven having reflex flues arranged on its crown, and vertical flues which connect the two sets of reflex fines, substantially as and for the purposes described.

2. In a knockdown portable oven, the combination of an outer shell or casing composed of sections of sheet metal connected together at the corners, a detachable fire-chamber arranged therein and provided with detachable horizontal reflex flues arranged in substantially the plane of the fire-chamber, said fines terminating at their ends in Vertical fines, adetachable oven-chamberhaving upon In testimony whereof I affix my signature, its crown a series of reflex fines adapted at in presence of two Witnesses, this 9th day of one end to connect with the Vertical end of January, 1889.

the fines leading "from the fire-chamber and ALVIN '1. SIMPKINS. 5 atthe other end with an uptake or chimney, Witnesses:

substantially as and for the purposes de- S. L. SCHRADER,

scribed. PAUL BAKEWELL. 

